1.Well grapes are my turkeys favorite treats, so I am not sure they are going to just weed for you.
2.Super friendly, they yak and yak at us and follow us everywhere.
3.Depends on the breed, we got a heritage breed and I thought they would eat more than they do. We have four and fill their dish twice a day if that and its a small feeder.
4.Best to coop them up at night or expect to lose some from predatory animals. They will roost high in the trees for their own protection also if trees are available for them.
There are many turkey experts on this site, do a search. I went with Midget Whites (smaller table bird with great flavor) after all the info that was put out by everyone on this site.
We really enjoy them, now let's see if I will be able to eat them, they are so friendly and curious.